Revised Total Coliform Rule (RTCR) violations in Washington
845 active public water systems in Washington had a Revised Total Coliform Rule (RTCR) violation in the past three years, 133 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sunrise NO 12 Pierce County |
3,018 | 1 | 0 | |
|
Carson Skamania County |
3,015 | 2 | 0 | |
|
Snoqualmie Casino Snoqualmie · County |
3,000 | 3 | 0 | |
|
Dosewallips State Park Jefferson County |
2,941 | 1 | 0 | |
|
West Sequim Bay INC Clallam County |
2,759 | 2 | 0 | |
|
Surfside Homeowners Pacific County |
2,687 | 2 | 0 | |
|
Suncadia Resort Kittitas County |
2,640 | 1 | 0 | |
|
Stevens CO Pud Loon Lake Stevens County |
2,487 | 1 | 0 | |
|
Ione Water Dept Pend Oreille County |
2,395 | 1 | 0 | |
|
White River Entrance Pierce County |
2,277 | 1 | 0 | |
|
White River Campground #11 Pierce County |
2,263 | 1 | 0 | |
|
Blake Island State Park Wtr Kitsap County |
2,260 | 1 | 0 | |
|
Alpine Water District Chelan County |
2,255 | 3 | 1 | |
|
Cle Elum Water Department Kittitas County |
2,213 | 2 | 0 | |
|
Limekiln State Park San Juan County |
2,149 | 1 | 0 | |
|
Lakeland Village Water Mason County |
2,120 | 1 | 0 | |
|
Ryegrass Eb/wb Rest Area Kittitas County |
2,114 | 1 | 0 | |
|
Pearrygin Lake State Park Both CG Okanogan County |
2,103 | 1 | 0 | |
|
White Pass Company INC Lewis County |
2,094 | 4 | 0 | |
|
Mistequa Casino Chewelah · County |
2,070 | 5 | 0 | |
|
Wilderness Rim Association King County |
1,867 | 1 | 0 | |
|
Scatter Creek Rest Area Thurston County |
1,858 | 1 | 0 | |
|
Nason Creek Rest Area Chelan County |
1,855 | 1 | 0 | |
|
Hoodsport Mason County |
1,853 | 1 | 0 | |
|
Hamilton AL Lewis County |
1,807 | 1 | 0 | |
|
Basin City Water Sewer District Franklin County |
1,740 | 5 | 0 | |
|
Camano Island State Park Island County |
1,718 | 2 | 0 | |
|
Maxwelton Water System Island County |
1,700 | 3 | 0 | |
|
Republic City of Ferry County |
1,673 | 1 | 0 | |
|
Taholah Tahola · County |
1,600 | 4 | 2 | |
|
Tapps Island Water System Pierce County |
1,501 | 4 | 1 | |
|
High Valley Country Club Lewis County |
1,425 | 1 | 0 | |
|
Pomeroy City of Garfield County |
1,395 | 1 | 0 | |
|
Harbor Hills Community Water System Island County |
1,373 | 4 | 1 | |
|
Colville Fuels Noisy Waters Nespelem · County |
1,350 | 1 | 0 | |
|
Winthrop Town of Okanogan County |
1,350 | 4 | 0 | |
|
Chelan County Fairground Chelan County |
1,335 | 1 | 0 | |
|
Winchester EB Rest Area Grant County |
1,330 | 1 | 0 | |
|
Telford Rest Area Lincoln County |
1,309 | 1 | 0 | |
|
Mount Spokane Ski #2 Spokane County |
1,301 | 1 | 0 | |
|
North Mason High School Mason County |
1,300 | 1 | 0 | |
|
Western Forest Industries Museum Lewis County |
1,266 | 1 | 0 | |
|
Roy City of Pierce County |
1,214 | 1 | 0 | |
|
Warm Beach Conference Grounds Snohomish County |
1,190 | 1 | 0 | |
|
Monse-Riggan Camp Okanogan County |
1,165 | 4 | 1 | |
|
Kopachuck Middle & Voyager Elem WS Pierce County |
1,150 | 2 | 0 | |
|
Elma Rest Area Grays Harbor County |
1,122 | 1 | 0 | |
|
Potlatch State Park Mason County |
1,055 | 1 | 0 | |
|
Estates INC Clallam County |
1,043 | 1 | 0 | |
|
Wilbur Town of Lincoln County |
1,040 | 4 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.